ECO A07 · 3,687 games · White to move
| Move | Games | Share | White / draw / Black | Leads to |
|---|---|---|---|---|
| O-O | 2,803 | 76.0% | ||
| d3 | 414 | 11.2% | ||
| d4 | 198 | 5.4% | ||
| c4 | 127 | 3.4% |
A further 145 games played a rarer move, or ended right here.
Data: 4 million rated games from the Lichess open database (CC0), both players 1600+, blitz and slower. Popular is not the same as good.